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batt-bar.py
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batt-bar.py
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#!/usr/bin/env python3
import RPi.GPIO as GPIO
import requests
import simplejson as json
import sys
import time
#sudo pip3 install tenacity
#from tenacity import retry, stop_after_attempt
#from tenacity import wait_combine, wait_fixed, wait_jitter
# Suppress output pertaining to use of SPI pins as general GPIO (tautology)
GPIO.setwarnings(False)
# Broadcom GPIO pin numbering scheme
GPIO.setmode(GPIO.BCM)
# Cross-strip outputs; via omission of
# I2C, GND pins (on subsequent physical implementation)
BAR_R1 = 26
BAR_R2 = 19
BAR_R3 = 13
BAR_Y1 = 6
BAR_Y2 = 5
BAR_G1 = 7
BAR_G2 = 8
BAR_G3 = 11
BAR_G4 = 9 # no apparent output
BAR_G4 = 25
BAR_G5 = 10
# SolarEdge API docs:
# https://www.solaredge.com/sites/default/files/se_monitoring_api.pdf
# SolarEdge inverter identifier/API key
SE_SITE = 'nnnnnn'
SE_AKEY = 'ALPHANUMERIC0123456789ABCEDFGHIJ'
# array/tuple pin layout
bar = [26, 19, 13, 6, 5, 7, 8, 11, 25, 10]
GPIO.setup(bar, GPIO.OUT)
#@retry(wait=wait_combine(wait_fixed(10), wait_jitter(30)),
# stop=stop_after_attempt(5))
r = requests.session()
# URL to SolarEdge API
u = 'https://monitoringapi.solaredge.com/site/' + SE_SITE
u += '/currentPowerFlow?api_key=' + SE_AKEY
while 1:
try:
j = r.get(u, timeout=10)
if 'STORAGE' not in j.text:
print('no data')
time.sleep(900)
j = r.get(u, timeout=10)
# sys.exit()
# STORAGE key in j.json()['siteCurrentPowerFlow']
# if 'STORAGE' in j.text:
t = j.json()['siteCurrentPowerFlow']['STORAGE']
c = int(t['chargeLevel'])
# remainder from division
d = c % 10
# index to pinout array for LED PWM
e = int(c / 10)
# print(e)
if e < 10:
print(bar[e])
# output selection control structure, tuple addressing
if c == 100:
GPIO.output(bar, (1, 1, 1, 1, 1, 1, 1, 1, 1, 1))
elif c >= 90:
GPIO.output(bar, (1, 1, 1, 1, 1, 1, 1, 1, 1, 0))
elif c >= 80:
GPIO.output(bar, (1, 1, 1, 1, 1, 1, 1, 1, 0, 0))
elif c >= 70:
GPIO.output(bar, (1, 1, 1, 1, 1, 1, 1, 0, 0, 0))
elif c >= 60:
GPIO.output(bar, (1, 1, 1, 1, 1, 1, 0, 0, 0, 0))
elif c >= 50:
GPIO.output(bar, (1, 1, 1, 1, 1, 0, 0, 0, 0, 0))
elif c >= 40:
GPIO.output(bar, (1, 1, 1, 1, 0, 0, 0, 0, 0, 0))
elif c >= 30:
GPIO.output(bar, (1, 1, 1, 0, 0, 0, 0, 0, 0, 0))
elif c >= 20:
GPIO.output(bar, (1, 1, 0, 0, 0, 0, 0, 0, 0, 0))
elif c >= 10:
GPIO.output(bar, (1, 0, 0, 0, 0, 0, 0, 0, 0, 0))
else:
GPIO.output(bar, 0)
# apply PWM with d*10 duty cycle on next level above (c - d)%
if d > 0:
p = GPIO.PWM(bar[e], 100)
p.start(int(d*10))
wait = 900
while wait > 0:
print(wait)
time.sleep(1)
wait -= 1
except ConnectionError:
print('-error-')
except ConnectionResetError:
print('Reset')
except KeyboardInterrupt:
GPIO.cleanup()
sys.exit()